Functional analysis  
Yoshida, Kōsaku, 
 - Berlin ; | New York :  Springer, 
 - xii, 500 p. ;  24 cm. 
 - ed." | "Originally published as vol. 123 of the Grundlehren der mathematischen Wissenschaften"--T.p. verso." .
<br/><br/> Reprint of the 1980 
<br/><br/><label>ISBN: </label>3540586547 (Berlin : acidfree paper)